Law enforcement investigates report of squalid conditions at Octomom house

TMZ has obtained pictures of Octomom Nadya Suleman's home that have triggered a police and child services investigation into allegations that her 14 kids are living in horrendous conditions and are being grossly neglected.

And there's more. One photo shows some of the kids in the backyard, barefoot, dirty and wearing no pants.

"The kids are in desperate need of help, and I tried to help and she's not open to anyone helping her," Stephanie told TMZ. She says the boys are wearing girl's clothes, they are neglected, and Suleman is incapable of caring for them.

Authorities stayed at Suleman's home Tuesday night for an hour-and-a-half, and determined the kids were not in danger. There will, however, be follow-up with Children's Services.